I will give you 100 points and mark you as brainilest if you answer the whole thing correctly.

Answer:
1.)[tex]Al_{2} O_{3}[/tex]
2.) [tex]Li_{3} N\\[/tex]
3.) 2HCl
4.) MgO
5.) Mg and [tex]O_{2}[/tex]
6.) [tex]H_{2}[/tex] and [tex]O_{2}[/tex]
7.)Na and [tex]Br_{2}[/tex]
8.) 3 aluminums and 3 chlorides
Explanation: